These are useful for all the same reasons as inorganic mulches, with the additional benefit of breaking down and providing nutrients and encouraging useful worms, insects, bacteria and other life that can thrive, control pests and benefit the soil.

They insulate the soil, keeping it warm in the wider months but cooler in the summer months and aid the soils moisture absorption. They can also stop the soil from clumping into hard patches, so helping seeds take and grow and helping water penetrate the soil.

N.B. All mulches pictured in this article are organic, (wood chippings and bark types)